I just had the Koni FSD shocks put on rear and the Koni Adjustables on the front. No changed to springs. The ride is now more stable with no more porpoising as it was doing with original shocks after 40,000 miles.

Only people riding in the back of ours, are our doggies, and they haven't complained about the quality of the ride...yet

Ok, the dogs complained :-(.

After more than 11,000 miles on our current trip, the pups are now refusing to ride in the back. Can't really blame them. I've tried to nap back there and have, at times, nearly been launched to oblivion!

For anyone who has switched to the Konis. I adjusted the rears all the way to the softest setting on mine. I am much happier with the ride now, they are not mushy or bouncy it just provides a softer ride. Of course this is a personal preference and some may like the real firm ride. Just wanted to remind everyone that the option exists.

I actually had it done but I called the Sprinter store guys and got the instructions from them first. They said to loosen the top bolts, remove the bottom bolts, swing the shock out or back, push the shock in and turn to the right till you feel it catch or lock, then turn counter clockwise all the way till it stops and that will be the softest setting.

I actually had it done but I called the Sprinter store guys and got the instructions from them first. They said to loosen the top bolts, remove the bottom bolts, swing the shock out or back, push the shock in and turn to the right till you feel it catch or lock, then turn counter clockwise all the way till it stops and that will be the softest setting.

Had my shop adjust the rear shocks per above, service generator and rotate tires. Heading to Vegas in 2 weeks via US36 will update how it goes.

Thanks

Mike

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Mike
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If you work until you have everything you 'WANT' - it will probably be too late to enjoy it. Live in the Moment and enjoy today.

Apparently there IS such a thing as infant mortality. We put them on and, like many others, noticed an immediate significant improvement in handling. That is, until about 10 days ago when I had to limp home through the entire IH-10 corridor between San Antonio and Houston, an experience that was beyond miserable.

I informed my husband that "something" was clearly wrong and that I didn't know what, only that the handling had degraded to become almost unmanageable. He pulled off the shocks and found that one of them had somehow lost its adjustment ability. So effectively, I think I may have driven 200 miles with shocks at different settings.

He ordered a new one, put it in, and the Interstate was instantly back to normal. We drove it 300 miles this past weekend to a college football game and National Forest camping and it behaved perfectly the entire time.

Moral of that story - if you think there's something wrong with your Interstate, there probably is something wrong with it, even if it seems like the key parts are so new that there couldn't possibly be anything wrong. The shock apparently failed with just a few hundred miles on it. Now we have to pursue a warranty claim.

I just had the Koni FSD shocks put on rear and the Koni Adjustables on the front. No changed to springs. The ride is now more stable with no more porpoising as it was doing with original shocks after 40,000 miles.

- - Mike
2013 AS Interstate on 2012 MB Sprinter

I'm not sure if you ever conveyed whether the Koni FSD's also made the ride SMOOTHER in the back?